/// <summary>Returns all possible slots of the procedure docu</summary> public HTuple QueryInfo() { IntPtr tuple; HDevProcedure.HCkE(HalconAPI.CreateTuple(out tuple)); HDevProcedure.HCkE(EngineAPI.QueryInfo(this.procedure, tuple)); GC.KeepAlive((object)this); HTuple htuple = HalconAPI.LoadTuple(tuple); HDevProcedure.HCkE(HalconAPI.DestroyTuple(tuple)); return(htuple); }